1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b99343788e70b6304641ba7bd5c43657e80d82ffe04b734b0386225b072a7f0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0d18b2b-3c3c-4041-85cb-afbfba3ac343.json and https://artists.proofprofile.net/proofs/artist/b0d18b2b-3c3c-4041-85cb-afbfba3ac343.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56178f599793417c6db345e244819316ec815b6512fbc445bb8e745c14855b5c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1916047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb998697d75b8d8973bbe2567627d86d3617e617b334681ea8c25a8d44c2b8b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5221e033d321c8d6fb8e0f5ea03b515881336ede157e2cd9e40987ed3b0841. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09cc91ad96c1480c12fd070f164e07305230a489eb4c930ab7144b2694088f8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76d89244e43d210abc1cb59d7785ae7ee9d636d6de12daad4ed2d1a4b1de028. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3aca5995234503bcac6ab8858b6d7cdbacf8960f0bec9a95875d39bcaa6a32d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67621683d410150a09fa6f70c932f147bad006c446d2b7dbc13a25d5e64e3ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0321c02354ce847a5a04d2b30e9be31a5f8c876a106bcf3b9dcf260d50c7a72d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e3366086950922ed3a87798fb1416f14061b20cf5f3dcce6942beb01ea379b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d0cbf69f06b2a0b7ca1653aff09f3dee7fe39e15db22fc57bd46f6b0210664. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb0933438a3aa03f8820a39667eb57ae99bcd4d5bb0b260769a24c73639244c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1917126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9958df328d7528d2c14db2426f41ce1d8456a8921155482b0c6e127c80e85581. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1812667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8972c6813f4fe3a5936c55f60cf3787e7bcf693aa8a9c21b1c186e28cd5a487a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1812668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bb9d3575c013b9a0050dd8e6d11ea55b5906d93d2867e009c17f87efd721b8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1812670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1058597db6a42e0bf2ec92827b2a38fa0529851058c76ce48284b2555f65f1c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1812676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58b0f1b15302bd0a0035610f9974ac5b658215f085f6b0f53a431c20a5c8bf5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1812679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2585cddaa8c57f1982ce4a9c33790e52d36054e54d0107c4f73002f5ef9e7ba6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2414767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d16ce23207a1e19189ccaf03921a4d41b35059adacc006d6d90bd0827d21371. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2471846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e1614ae28b46df22551bdb95db014456acc7665999ca0ed3c1643182ca19c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2181755.
Throw on That Crakk (feat. Push Almighty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2143d6f989acd83a2fda4a67cdccb2a39503966cbc53fffcc69caf3fd4de641b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADB1769256.